|
|
|||||||||||||||
|
Buscar | Enviar | Ayuda | Servicio de Bibliotecas | Sobre el DDD | Català English Español | |||||||||
| Página principal > Artículos > Artículos publicados > Exploring dielectric properties in atomistic models of amorphous boron nitride |
| Fecha: | 2024 |
| Resumen: | We report a theoretical study of dielectric properties of models of amorphous Boron Nitride, using interatomic potentials generated by machine learning. We first perform first-principles simulations on small (about 100 atoms in the periodic cell) sample sizes to explore the emergence of mid-gap states and its correlation with structural features. Next, by using a simplified tight-binding electronic model, we analyse the dielectric functions for complex three dimensional models (containing about 10. 000 atoms) embedding varying concentrations of sp, sp and sp bonds between B and N atoms. Within the limits of these methodologies, the resulting value of the zero-frequency dielectric constant is shown to be influenced by the population density of such mid-gap states and their localization characteristics. We observe nontrivial correlations between the structure-induced electronic fluctuations and the resulting dielectric constant values. Our findings are however just a first step in the quest of accessing fully accurate dielectric properties of as-grown amorphous BN of relevance for interconnect technologies and beyond. |
| Ayudas: | Agencia Estatal de Investigación PCI2021-122092-2A Agencia Estatal de Investigación PID2022-138283NB-I00 Agencia Estatal de Investigación PCI2021-122092-2 European Commission 956923 European Commission 101034328 Agencia Estatal de Investigación PID2019-106684GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00997 |
| Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Lengua: | Anglès |
| Documento: | Article ; recerca ; Versió publicada |
| Publicado en: | JPhys materials, Vol. 7, Issue 3 (June 2024) , art. 35003, ISSN 2515-7639 |
20 p, 6.5 MB |